Sep 23, 2010 2:05am PDT
to be executed in virginia is set to die tonight. the u.s. supreme court refused to block the death sentence for convicted murderer teresa lewis. >>> lawmakers on capitol hill today discuss a serious problem among student athletes. they're considering ways to prevent young athletes from suffering concussions while playing sports. >>> finally this half hour, "forbes" magazine just released its annual list of the 400 wealthiest people in america. bill gates topped the list with a net worth of $54 billion. >> the list also shows that the rich are in fact getting even richer. abc business news editor dan arnall looks at the trend. >> reporter: the faces are familiar. bill gates. warren buffett. these are america's wealthiest people. topping the famous forbes 400 list of the richest americans again this year. even with the slowly recovering economy, the amount of money it takes to be amongst the 400 has gone up. >> 2008, the cut-off was $1.3 billion. last year $950 million. this year up a bit to $1 billion. it's at least moving up. we'll take that. >> reporter: this year'